2. Surface Area of the Liquid
The rate of evaporation increases on increasing the surface area of the liquid. So, if the surface area of a liquid exposed to the air is increased, the rate of evaporation of the liquid increases. For example, if the same liquid (say, water) is kept in a test-tube and in a china dish, then the liquid kept in the china dish will evaporate more rapidly (because more of its surface area is exposed to air). In our daily life, we spread out the washed wet clothes while drying to increase their surface area for the rapid evaporation of water present in them (which leads to quicker drying of wet clothes). After rain, the wet roads dry quickly because the rain water is spread over a large area of road. This gives the particles of water a greater chance of escaping from the liquid. From this discussion we conclude that the rate of evaporation of a liquid can be increased by increasing the surface area of the liquid.
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3. 2. Liquid to Gas Change : Boiling (or Vaporisation)
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4. 2. Latent Heat of Vaporisation (Liquid to Gas Change)
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5. Classification Of Matter As Solids, Liquids And Gases
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6. Effect of 'Heating' and 'Cooling' on a Saturated Solution
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9. Why Solids, Liquids and Gases Have Different Properties
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14. 2. The Particles of Matter have Spaces Between Them
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15. 1. Solid to Liquid Change : Melting
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16. 3. Gas to Liquid Change : Condensation
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20. 1. Latent Heat of Fusion (Solid to Liquid Change)
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24. 1. The Particles of Matter are Very, Very Small
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26. 4. The Particles of Matter Attract Each Other
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28. 3. The Particles of Matter are Constantly Moving
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29. Characteristics of Particles of Matter
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30. 4. Liquid to Solid Change : Freezing
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31. Two More States of Matter : Plasma and Bose-Einstein Condensate
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38. The Common Unit Of Temperature and Si Unit Of Temperatre
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39. To Show That Solids and Liquids Cannot be Compressed but Gases Can be Compressed Easily
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44. To Show that Liquids do not have a Fixed Shape but they have a Fixed Volume
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45. To Show the Presence of Water Vapour in Air
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49. Gases Can be Liquefied by Applying Pressure and Lowering Temperature
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50. To Show that Gases do not have a Fixed Shape or a Fixed Volume
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